Mariana, MG: Minas da Passagem gold mine tour

ROCKHOUNDING LICENSED / PERMIT CONFIRMED

Where: Brazil · South America · approx. -20.39, -43.44 (vicinity only)

Why this spot: Rockhounding locality: the largest gold mine in the world open to visitors, about 35 tons extracted since the early 1700s, between Ouro Preto and Mariana

What turns up: tour: 315 m of gold-mine galleries, crystal-clear underground lake, imperial topaz and gold shops in Ouro Preto nearby

Access: Licensed / permit.

Paid guided visit only (tickets via mariana.minasdapassagem.com.br, run by Pincus Turismo); underground scuba in the lake through approved operators

Open in Mudlark Map →

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.

Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.